Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856586 | Method for imparting selectivity to otherwise nonselective polymer profile control gels | Craig H. Phelps | 1989-08-15 |
| 4844163 | In-situ foaming of polymer profile control gels | Randy D. Hazlett | 1989-07-04 |